A very flexible theme with versatile layouts
Price: $35
With MultiPress you can create unlimited number of custom posts and assign for them different features: events, papers, people, locations, portfolios, galleries, etc.
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Fully responsive and minimal design
Theme features include: 4 custom post types, a responsive flex slider, filterable portfolio/gallery, and a built-in contact form.
Price: $35
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Link: Lulu WP Theme

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A clean business or personal WP theme
Price: $45
Galaxy comes with a front page slider where you can include posts or pages, display images or video. A portfolio page template includes lightbox that will help you display your products in an attractive way. There are three widget ready locations to help you promote your services and products easily.
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A flexible and responsive theme framework
Price:
Standard Package: $79
Developer Package: $159
This theme framework has a clean and simple design and includes a vast array of features, layout options, and customization possibilities. Backbone features include a comprehensive back-end control panel, templates for your blog, magazine, business, portfolio and even a photoblog layout, 6 single post & page layout options, typography and custom styling options, and a responsive design making it mobile ready.
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Business Layout

Portfolio Layout

Magazine Layout

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Link: Backbone WP Theme

A page builder theme – Flexible theme with many options
This flexible theme comes with many features: create a page easily by a drag-drop module, create an unlimited sidebar, choose over 350 fonts, 15 predefined background patterns, a custom background uploader, change colors via their admin panel and much more.
Price: $35
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Link: Modernize WP Theme